I remember a old cartoon that had like people fighting giants. I remember one episode in particular where the giant put a person into their chest by opening their rib cage. That is all I can remember about that tv series. If anyone knows what the name of that series is, plz reply. Thx.

Two warring groups of beings on an alien world must enter suspended animation to avoid the ravages of a worldwide disaster.
After a time, a radiation leak forces the computer to tranfer the minds of the endangered citizens into mech bodies.
After the people awake in their mech bodies they resume their battle, and things go on as they did before, until a group of humans crash land into the middle of this. They discover that the humans can link up to the mechs and reconfigire them into different more battle-ready modes.
The helpful good humans team up with the Protectons(good). The corrupt criminal humans join with the Terrakors(evil) in a symbiotic relationship and continue the fight.